Docker and Ansible deployment

build_image.yml

---
- hosts: localhost

  vars_files:
    - '{{vars_file}}'

  vars:
    repo_url: '{{repo_url}}'
    extension: '{{extension}}'

  tasks:

  - name: Download artifact from repository
    maven_artifact: repository_url={{repo_url}} group_id={{group_id}} artifact_id={{artifact_id}} version={{version}}
 extension={{extension}} dest={{dockerfile_path}}/build/{{artifact_id}}.{{extension}}

  - name: Copy Dockerfile to downloaded artifact dir
    copy: src={{dockerfile_path}}/Dockerfile dest={{dockerfile_path}}/build

  - name: Copy dependencies (ficheros .properties)
    copy: src={{item.path}} dest={{dockerfile_path}}/build/{{item.name}}
    with_items:
    - '{{dependencies}}'

  - name: Build Docker image
    docker_image: path={{dockerfile_path}}/build name={{image}} state=build

  - name: Tag image
    command: docker tag -f {{registry}}:{{image}} registr{{image}}:{{version}}

  - name: Push image to private registry
    command: docker push {{image}}:{{version}}
    
  - name: Delete build directory
    file: path={{dockerfile_path}}/build state=absent

create_dockerfile.bash

#!/bin/bash

if [ $# -lt 1 ]
  then
    echo "Usage: $0 <vars_file>"
    exit
fi

if [ ! -f $1 ]
  then
    echo "File $1 doesn't!"
    exit
fi

ansible-playbook $(pwd)/create_dockerfile.yml --extra-vars="vars_file=$1"

create_dockerfile.yml

---
- hosts: localhost
  vars_files:
    - "{{vars_file}}"

  tasks:
    - name: Generate and copy Dockerfile
      template: src=/etc/company/deployment/templates/Dockerfile.j2 dest="/etc/company/{{artifact_id}}/Dockerfile"g

create_vars_file.bash

#!/bin/bash

if [ $# -lt 1 ]
  then
    echo "Usage: $0 <environment>"
    exit
fi

ansible-playbook /etc/company/deployment/playbooks/create_vars_file.yml --extra-vars="environment=$1 path=$(pwd)"

deploy.bash

#!/bin/bash

if [ $# -lt 3 ]
  then
    echo "Usage: $0 <app> <version> <environment>"
    exit
fi

readonly REGISTRY="170.20.20.1:5000"
readonly BUILD_IMAGE="/etc/company/deployment/playbooks/build_image.yml"
readonly RUN_CONTAINER="/etc/company/deployment/playbooks/run_container.yml"

app_dir=/etc/company/$1
vars_file=$app_dir/vars-$3.yml

if [ ! -f $vars_file ]
  then
    echo "File $vars_file doesn't exist!"
    exit
fi

ansible-playbook $BUILD_IMAGE --extra-vars "vars_file=$vars_file dockerfile_path=$app_dir version=$2 registry=$REGISTRY"
ansible-playbook $RUN_CONTAINER --extra-vars "vars_file=$vars_file version=$2 registry=$REGISTRY" --sudo --vault-password-file=vault.txt -vvvv

Dockerfile.j2

FROM {{registry}}/my-tomcat:1.0.0

ADD {{artifact_id}}.war /usr/local/tomcat/webapp/ROOT.war
{% for dependency in dependencies %}
ADD {{dependency.name}} {{dependency.path}}
{% endfor %}

CMD ["catalina.sh", "run"]

run_container.yml

---
- hosts: "{{hosts_group}}"
  serial: 1
  vars_files:
    - secret
    - '{{vars_file}}'
  remote_user: root
  
  tasks:
  - name: Run app container
    docker:
      name: "{{artifact_id}}"
      insecure_registry: true
      image: "{{registry}}/{{image}}:{{version}}"
      pull: always
      state: reloaded
      ports:
      - "{{port_mapping}}"
  - name: Wait for server startup
    local_action: wait_for host={{inventory_hostname}} port={{port_mapping.split(':')[0]}} timeout=50 delay=10

vars-test.yml

---
group_id: com.company
artifact_id: app

image: app_img

dependencies:
  - { name: 'app.properties', path: "/etc/company/app/app.properties" }
  - { name: 'login.properties', path: "/etc/company/login_service/app.properties" }
  
port_mapping: 8080:8080
hosts_group: test

vars_file.j2

---
group_id: #required
artifact_id: #required

image: #required

dependencies:
# - { name: 'app.properties', path: "/etc/company/app/app.properties" }
# - { name: 'login.properties', path: "/etc/company/login_service/app.properties" }

#required
port_mapping: xxxx:8080

hosts_group: {{environment}}